- Pacific Northwest Cooperative Extension[remove]62
- Oregon State University. Extension Service60
- Washington State University. Cooperative Extension40
- United States. Department Of Agriculture39
- University Of Idaho. Cooperative Extension System24
- University Of Idaho. Extension21
- Washington State University. Extension21
- Burrill, L. C.16
- University Of Idaho. Cooperative Extension Service14
- Schmall, Vicki L.6
- Fitzsimmons, Jim P.5
- Stebbins, Robert L.5
- Cheeke, Peter R.4
- Cropper, James B.4
- Halse, Richard R.4
- Hannaway, D. B.4
- Hermes, J. C. (James C.)4
- Hansen, D. E. (Donald E.)3
- Hansen, Donald3
- Hart, John M. (John Mervyn), 1947 3